参考含义
这个码是什么意思？
P0171/P0172 对应第 1 气缸列，P0174/P0175 对应第 2 气缸列。过稀或过浓是控制器对混合气的判断，不是某个零件损坏的直接测量。比较怠速及负荷工况燃油修正，检查进气排气漏气，并按车型标准测试供油及传感器读数。
来源与解读范围 [1]
故障码描述检测到的异常，不直接指定必须更换的零件。
限定车辆范围
车型关联可作为查阅线索；具体发动机、生产范围和软件条件请核对厂商资料。
更换零件之前
记录报码及冻结帧，检查蓄电池状态、相关报码和可见的线束或软管损伤。按照该车诊断流程和测试结果决定维修，避免仅凭故障码换件。
扫描记录表 →厂商原文中的含义
原文含义可能随车型和后缀变化。此处按来源展示，不代表通用诊断结论。
P0175Fuel System 2/1 Rich
P0175System too Rich Bank 1/Bank 2
P0175System Too Rich Bank 1/Bank 2
厂商技术资料
74以下为英文原文
DODGE
Flash: Powertrain Control Module (PCM) Updates PCR9A Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P032F-00 - Combustion Engine Producing Insufficient Torque. ● P2D28-00 - Cold Start Propulsion …
RAM
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0420 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430 - Catalyst System Efficiency Below Threshold …
RAM
Flash: Powertrain Control Module (PCM) Updates *Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0420 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430 - Catalyst System Efficiency Below Thresho…
FORD
Some 2019-2021 F-150 vehicles built on or before 04-Mar-2021 and equipped with a 5.0L engine may experience an illuminated malfunction indicator lamp (MIL) and diagnostic trouble codes (DTC) P0171, P0172, P0174, P0175, P0364, P060B, P062B, P1104, P164C, P2601, P2BEC, P2BED, P2BEE, P2BEF, P2BF0, P2BF1, P2BF2 and/or P2BF3 stored i…
核对适用车辆
294车型关联可作为查阅线索；具体发动机、生产范围和软件条件请核对厂商资料。
来源与解读范围
以下解释由本站依据所列原厂资料整理。页码从 PDF 文件第一页计数。原文为英文，译文供查阅参考；引用某个版本不代表它就是厂商当前最新指令。
- 2024–2025 MY OBD System Operation Summary for Gasoline Engines ↗
Ford Motor Company · PDF 页码 21, 22 · 2024-04-16
来源核对日期 · 2026-10-27
还能继续驾驶吗？
仅靠故障码无法判断是否适合继续行驶。故障灯闪烁、严重抖动、过热、机油压力报警或制动转向异常都需及时处理。影响车辆控制或发动机安全时，应在安全地点停车并寻求帮助。以车辆手册为准。